BlackRock manages money for other people and charges a fee for doing it. Pension funds, governments, insurance companies, and everyday investors hand their money to BlackRock, which invests it in stocks, bonds, infrastructure, private credit, and more. The bigger the pile of money BlackRock looks after, the more fees it collects. At December 31, 2025, that pile stood at $14.0 trillion. On top of investment management, BlackRock sells a software platform called Aladdin, which other financial firms use to track and manage risk in their own portfolios. So the business has two engines: fees tied to how much money is under management, and subscription fees from technology clients. The diagram below traces where the money goes.

Five years of numbers tell a clear story about direction. Revenue was $19.4 billion in 2021, dipped to $17.9 billion in both 2022 and 2023 when markets fell and AUM shrank, then climbed to $20.4 billion in 2024 and $24.2 billion in 2025. The recovery was not just markets bouncing back. BlackRock added clients, pulled in a record $698 billion of net new money in 2025, and completed large acquisitions that brought new AUM and new capabilities.

The revenue recovery looks strong on the surface, but one number deserves a closer look. Operating margin on a GAAP basis dropped from 37.1% in 2024 to 29.1% in 2025. That fall was driven by large noncash costs tied to the acquisitions of GIP, HPS, and Preqin. Strip those out and the adjusted operating margin held nearly flat, at 44.1% in 2025 versus 44.5% in 2024. Free cash flow was $4.7 billion in 2024 and came in at $3.6 billion in 2025, partly reflecting higher cash costs from integration activity. So the underlying business looks healthy, but the acquisition spending is real and the integration is not yet finished.

The biggest shift in the last two years is the push into private markets. Private markets means investments that are not traded on public stock exchanges, such as private credit loans, infrastructure projects like airports and data centers, and private equity. BlackRock spent heavily to build this capability fast. It acquired GIP, a large infrastructure manager, in October 2024. It acquired HPS Investment Partners, a major private credit firm, in July 2025, adding $118 billion of fee-paying AUM at close. It acquired Preqin, a data provider for private markets, in March 2025 for approximately $3.2 billion in cash. These deals together represent a strategic bet that clients want one firm to handle both their public and private investments.

The ETF business remains the single largest source of long-term base fees. BlackRock's iShares brand had $5.5 trillion of ETF AUM at end-2025 and pulled in $527 billion of net inflows during the year. Roughly 42% of long-term AUM sits in ETFs, and that segment contributed 45% of long-term base fees and securities lending revenue in 2025. The ETF engine funds the rest of the strategy.

The risks are specific, not abstract. First, because fees are a percentage of AUM, a sharp market downturn shrinks revenue automatically, with no bad decision required on BlackRock's part. In 2022 that happened: AUM fell from $10.0 trillion to $8.6 trillion and revenue dropped alongside it. Second, any large client can leave at any time. In 2025, a single client's partial redemptions drove $119 billion of net outflows from institutional index strategies. One client relationship moving partially can move the needle visibly. Third, Aladdin, the technology platform, faces competition from cheaper alternatives and depends on third-party cloud and data providers whose costs and reliability are outside BlackRock's control. Fourth, a cyberattack on a firm holding $14 trillion of client data would be extraordinarily damaging, both financially and reputationally. Fifth, the integrations of GIP, HPS, and Preqin are still in progress. Merging large, complex investment firms while keeping their key people and clients in place is difficult, and the benefits are not yet fully realized.